Add a handoff brief with five screenshots captured by driving the real
vite-preview build with Playwright (mocked API), confirming the
full-content reveal works across the originally reported proposal queue
table, the trace propagation edges, and the trace selection rails — with
the row staying unselected on reveal (stopPropagation holds).
Verification only; no code change. Records the harness gotcha that a
role-by-name query resolves to the row, not the icon trigger.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
